<span
  class="ant-checkbox"
  [class.ant-checkbox-checked]="nzChecked && !nzIndeterminate"
  [class.ant-checkbox-disabled]="nzDisabled"
  [class.ant-checkbox-indeterminate]="nzIndeterminate"
>
  <input
    #inputElement
    [checked]="nzChecked"
    [ngModel]="nzChecked"
    [disabled]="nzDisabled"
    (ngModelChange)="innerCheckedChange($event)"
    (click)="$event.stopPropagation()"
    type="checkbox"
    class="ant-checkbox-input"
  />
  <span class="ant-checkbox-inner"></span>
</span>
<span #contentElement (cdkObserveContent)="checkContent()"><ng-content></ng-content></span>
